Paint sprayer



Patented Aug. 25, 1931 UNITED STATES JOHN F. SCHYLANDER,

F CHICAGO, ILLINISV p PAINT SIRAYER Application filed December 17, 1928. Serial No. 326,627.

My invention relates to sprays ofthe general type describedY and claimedin my copending applications, Aiiled October 6, 1928, and 312,057, iiled il October 12, 1928. The invention has todo particularly vwith devices for producing a spray of finely atomized liquid material such as paint or other pigment, disinfectant, fungicides and insecticides, finely divided powdered material, etc.

An object of my invention is to provide a i To this end my invention consists in the novel construction, arrangement andcombination of parts herein shown and' described, and more particularly pointed out in the claims.

3' Referring now to the drawings forming a part of this specification and illustrating a preferred embodiment of my invention:

Fig. 1 is a sectional view through a device embodying my invention mounted onpa con- 35 tainer, the latter being shown fragmentarily;

Fig. 2 is a sectional view taken on the line 2--2 of Fig. 1;

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 1; and

Fig. 4 is a sectional scale taken on the line 4-4 of Fig. 1.

In the particular preferred embodiment shown in the drawings, the numeral 10 indicates a container of any desired shape, u size, and material for holding the liquid or powder which is to be sprayed. This container has a neck 12 which is preferably cylindrical and may be exteriorly threaded to engage a threaded portion 13 of aca-p 50 member 14.V The cap member is preferably Serial Nos. 310,776,

view on an enlargedV formed of sheet metal or theV like and has secured tothe upper portion thereof preferably by solder or other suitable means, a tubular member 15. This tubular member is open at'one end, as at 16, and its opposite 55 end 17 is closed, save. for an aperture 18. The closed end 17 is peculiarly shaped, as shown in Figs. .1 and 3 and may best be described by saying that this end ofthe tubular member is iirst formed in `a hemispherical shape and 60. is then given a diametrical crease, as shown f at 20. As a result, the aperture 18, originally circular is substantially elliptical and eX tends in a substantially V-shaped mannerY as shown in Fig. 1. The top portion of the cap 65V 14 is apertured as at 21, 22 and 23, while apertures are provided in the bottom of the tubular member 15 aligned with the aper turesv of the cap. Through the aperture 21 slidably extends a tubular member 25 having l0 an endy 26 disposed substantially at right angles to the portion which depends into the container 10 with room for vertical movement as hereinafter described.

Secured to the tubular member 25 by means '15 of solder or other suitable means is an arm 28 carried by a rod 29. The rod 29 extends through the, aperture 22 of the cap and aligned .aperture of the tubular member 15 and carries at its end a manipulating mern- 30 ber having a knurled head 36 with an annular `shoulder 36 (Fig. 4), the manipulating member passing through an aperture 37 provided in the tubular member 15.' As best shown in Fig. 4, the endvof the rod 29 is 85v threaded as at 38, engaging female threads 38 in the manipulating member 35. The rod. 29 has a pair of longitudinal and diametrically opposed keyways 30 engageable in opposed slots 31y in the wall of the aperture 22, and 99, the rod 29 is thus prevented yfrom turning onA its longitudinal axis. The manipulating member has an annular shoulder 40, and a helical compression spring 42 is disposed around the rod 29, abutting at one end 95 against the shoulder `and at the other against the interior of the tubular member v 15, so that the tendency thereof is to maintain the manipulating member and the tubular member 25 in extreme elevated position. 100

In operation, the tubular member 15 is connected to a suitable conduit 45 leading from any convenient source of air pressure (not shown). Such source of pressure may be a vacuum cleaner operating as a blower, an air pmnp, or a compressed air reservoir. In the normal condition of the device, as indicated by the dotted lines in Fig. 1, air entering the tubular member 15 from the conduit 45 will pass for the most part, directly through the tubular member 15 and out through the aperture 18, a small amount of air passing through the aperture 23 into the container 10. Some of the air passing directly through the member 15l tends to exert a back pressure through the end o'f the tube 25. Under such conditions, the device will be inoperative and no niaterial will issue from the tubular member 25.

When, however, it is desired to produce a spray, the manipulating member 35 is manually depressed against the action of the spring 42. This manipulating member carries with it the tubular member 25, the outlet end 26 ot' which is brought into registry with the V-shaped aperture 1S. As the end of the tubular member 25 approaches the aperture 18, the air issuing through said p aperture will tend to produce a suction or vacuum within the end of the tubular member, which suction, assisted by the pressure of air within the container 10 which has entered through the aperture 23, will tend to 1 cause the material within the container to be forced up through the tube 25 and out of the end thereof. Inasmuch as the current of air passing out through the V-shaped aperture 18 is moving at an extremely high velocity and is caused to diverge by the edges of the V-shaped aperture, the material being emitted from the end of the tubular member 25 will tend to issue therefrom as a more or less conically shaped cloud. As the end 26 of the tubular member 25 approaches the center of the V-shaped aperture, the vacuum induced in the end thereof will become stronger, so that the volume of spray will increase. The maximum spray will be pro` duced when the outlet end of the tube 25 is in exact registry with the aperture 18 as shown in full Alines in F 1. Hence, it is apparent that the amount of material issuing from the device may be regulated by varying the amount which the manipulating member is depressed.

The maximum limit ot the quantity of spray issuing from the device may be fixed by adjustment of the manipulating member 35. This is accomplished merely by turning the manipulating member on the threaded end of the rod 29. This results in either shortening or increasing the distance which the tubular member 25 may be depressed, inasmuch as the downward movement of the manipulating member is limited by the abutment of the shoulder 36 against the top ot the tubular member 15.

The tubular member 25 may easily be cleaned merely by insertion of a` pipe cleaner therein.

The device is very easily carried to any point where the spray is desired, the conduit l5 usually being flexible. The tubular member 15 may, it desired, be used as a handle and the manipulating` member displaced by the thumb, thus leaving the other hand free.

Having thus described my invention, it is obvious that various immaterial modiiications may be made in the same Without departing from the spirit of my invention; hence I do not wish to be understood as limiting myself to the exact form, construction,-

arrangement and combination of parts herein s iown and described or uses mentioned.

lVhat I claim as new and desire to secure by Letters Patent is 1. In a device of the class described, an air conduit having an inlet opening and an outlet opening, a material conduit having an outlet portion whose axis is parallel to that oi said air conduit, said outlet portion extending towards said outlet opening, manually operable means i'or moving said outlet portion transversely of its axis so as to brine' its outlet into registry with that of said air conduit, adjustable means for limiting the movement of said manually operable means so as to control the maxinium volume olf material issuing from said device, and means for resiliently retaining said outlet portion out ol registry with the outlet opening of said air conduit so that said device will be normally functionally inoperative.

2. In a device of the class described, an air conduit having an inlet opening, the opposite end of said conduit having an inwardly extending wall with an outlet opening therein, a material conduit having an outlet portion Whose axis is parallel to that of said air conduit, said outlet portion extending towards said outlet opening, means for moving said outlet portion transversely of its axis so as to bring its outlet into registry with that of said air conduit, adjustable means 'for limiting the movement of said manually operable means so trol the maximum volume ot mat D romsaid device, and means for resiliently etaining said outlet portion out of registry towards said aperture, manually operable` manually operablemeans for moving said outlet portion transversely of its axis and parallel to the major axis of said elliptical aperture so as to bring its outlet into substantial registry with said aperture, adjustable means for limiting the movement of said manually operable means so as to control the maximum volume of material issuing tromsaid device, and means for resiliently retaining said outlet portion out of registry with said aperture so that said device will be normallv functionally inoperative.

4. In a device of the class described and in combination with closure means for a container, an air conduit having an inlet opening, the opposite end of said conduit having an inwardly extending wall with an outlet opening therein, a material conduit having a portion adapted to extend into said container and having an outlet portionA extending towards said outlet opening and disposed substantially at right yangles to the first named portion, and manually operable means for moving said material conduit along the axis of the portion extending into said container, so as to bring its outlet into substantial registry with that of said air conduit.

5. In a device of the class described and in combination with closure means for a container, an air conduit having an inlet opening, the opposite end of said conduit having an inwardly extending wall' with a substantially elliptical aperture, a material conduit having a portion adapted to extend Ainto said container and having an out-let portion eX- tending towards said aperture and disposed substantially at right angles to the first named portion, and manually operable means for moving said material conduit along the axis of the portion extending into said container so as to bring its outlet into substantial registry with said aperture.

6. In a device of the class described, and in combination with closure means for a container, an air conduit having an inlet Opening. the opposite end of said conduit having an inwardly extending wall with an outlet opening therein, a material conduit having a portion adapted to extend into said containcr and having an outlet portion extending towards said outlet opening and disposed substantially at right angles to the first named portion, manually operable means for moving said material conduit along the axis of the portion extending into said container so as to bring its outlet into substantial reg` istry with said aperture, and means Jfor limiting the movement of said manually operable means so as to control the maximum volume of material issuing from said device.

7. In a device of the class described and in combination with closure means for a container, an air conduit having an inlet opening, the opposite end of said conduit having an inwardly extending wall with a substantially elliptical aperture, a material conduit having a portion adapted to extend into said container and having an outlet portionv extending towards said aperture and disposed substantially at right angles to the first named portion, manually operable means Jfor moving said material conduit along the-axis of the portion extending into said container so as to bring its outlet into substantial registry with said aperture, and adjustable means for limiting the movement of said manually operable means so as t'o control the maximum volume of material issuing from said device.

8. In a device of the class described, and a combination with closure means for a container, an air conduit having an inlet opening, the opposite end of said `conduit having an inwardly extending wall with an outlet opening therein, a material conduit having a portion adapted to extend into said container and having an outlet portion extending towards said outlet opening and disposed substantially at right angles to the lirst named portion, manually operable means for moving said material conduit along the axis of the portion extending into said container so as to bring its outlet into substantial registry with said aperture,adjustable means for limiting the movement of said manually operable means so as to vcontrol the maximum volume of material issuing from said device, and means for resiliently retaining'said outlet portion out of registry with said aperture so that said device will be normally functionally inoperative.

9. In a device of the class described and in combination with closure means for a container, an air conduit having an inlet opening. the opposite end :of said conduit having an inwardly7 extending wall with a substantially elliptical aperture, a material conduit having a portion adapted to extend into said container and having an outlet portion extending towards said aperture and disposed, substantially at right angles. to the first named portion, manually operable means for moving said material conduit along the axis of the portion extending into said container so as to bring its outlet into substantial registry with said aperture, adjustable means for limiting the movement of said manuallyr operable means so as to control the maximum volume of material issuing from said device. and means for resiliently urging said outlet portion out of registry with said aperture so that said device will be normally functionally inoperative.

In witness whereof I hereunto subscribe my name this 30th day of November A. D.,

JOI-IN F. SCHYLANDER. 

